https://issues.qgis.org/https://issues.qgis.org/favicon.ico2014-03-30T00:57:47ZQGIS Issue TrackingQGIS Application - Bug report #9861: self crossing lines stop rendering if offset is sethttps://issues.qgis.org/issues/9861?journal_id=500602014-03-30T00:57:47ZAlessandro Cialialessandro.ciali@gmail.com
<ul></ul><p>Win 7 Platform affected too.</p> QGIS Application - Bug report #9861: self crossing lines stop rendering if offset is sethttps://issues.qgis.org/issues/9861?journal_id=500612014-03-30T01:08:00ZGiovanni Manghigiovanni.manghi@gmail.com
<ul><li><strong>Status</strong> changed from <i>Open</i> to <i>Feedback</i></li></ul><p>offset in</p>
<p>symbology -> simple line -> offeset ?</p>
<p>if yes I cannot confirm on master.</p> QGIS Application - Bug report #9861: self crossing lines stop rendering if offset is sethttps://issues.qgis.org/issues/9861?journal_id=500622014-03-30T05:37:37ZGavin Fleminggavin@kartoza.com
<ul><li><strong>File</strong> <a href="/attachments/download/7063/offset_9861_sampleproject.zip">offset_9861_sampleproject.zip</a> added</li></ul><p>yes it is a simple line offset. Attached is a sample project with data and styles. In my Master the one layer (pitseng) does not draw and has no legend after applying an offset.</p> QGIS Application - Bug report #9861: self crossing lines stop rendering if offset is sethttps://issues.qgis.org/issues/9861?journal_id=500652014-03-30T11:43:33ZGiovanni Manghigiovanni.manghi@gmail.com
<ul><li><strong>Operating System</strong> deleted (<del><i>ubuntu</i></del>)</li><li><strong>Assignee</strong> set to <i>Alvaro Huarte</i></li><li><strong>Status</strong> changed from <i>Feedback</i> to <i>Open</i></li><li><strong>Subject</strong> changed from <i>lines stop rendering if offset</i> to <i>self crossing lines stop rendering if offset is set</i></li><li><strong>Target version</strong> set to <i>Version 2.4</i></li><li><strong>Affected QGIS version</strong> changed from <i>2.2.0</i> to <i>master</i></li><li><strong>OS version</strong> deleted (<del><i>13.10</i></del>)</li></ul><p>It results that this happen only/because the lines are self crossing.</p>
<p>On 2.0.1 does not happens, on the other hand the result of the offset is in general a lot better in 2.2 than it is in 2.0.</p>
<p>This is the result of Alvaro's work that I will assign the ticket and decide what would be the best option here.</p> QGIS Application - Bug report #9861: self crossing lines stop rendering if offset is sethttps://issues.qgis.org/issues/9861?journal_id=501002014-04-01T13:23:08ZAlvaro Huarteahuarte47@yahoo.es
<ul></ul><p>Giovanni Manghi wrote:</p>
<blockquote>
<p>It results that this happen only/because the lines are self crossing.</p>
<p>On 2.0.1 does not happens, on the other hand the result of the offset is in general a lot better in 2.2 than it is in 2.0.</p>
<p>This is the result of Alvaro's work that I will assign the ticket and decide what would be the best option here.</p>
</blockquote>
<p>Hi, I'm implementing ST_MakeValid function in QgsGeometry to solve this issue and then convert to valid the self-crossing geometries. But I am having problems with multi-thread-rendering. I open other issue before resolve this.</p>
<p>Best Regards<br />Alvaro</p> QGIS Application - Bug report #9861: self crossing lines stop rendering if offset is sethttps://issues.qgis.org/issues/9861?journal_id=501072014-04-02T01:45:54ZAlvaro Huarteahuarte47@yahoo.es
<ul><li><strong>Pull Request or Patch supplied</strong> changed from <i>No</i> to <i>Yes</i></li></ul><p>Hi, I propose this pull <a class="external" href="https://github.com/qgis/QGIS/pull/1290">https://github.com/qgis/QGIS/pull/1290</a> to solve this issue.</p>
<p>Now 'offsetline' function supports multi-geometries fetched from offseted self-crossing lines.</p>
<p>Best Regards<br />Alvaro</p> QGIS Application - Bug report #9861: self crossing lines stop rendering if offset is sethttps://issues.qgis.org/issues/9861?journal_id=506492014-05-07T08:20:58ZJürgen Fischerjef@norbit.de
<ul><li><strong>Status</strong> changed from <i>Open</i> to <i>Closed</i></li></ul><p>Fixed in changeset <a class="changeset" href="https://issues.qgis.org/projects/qgis/repository/revisions/0c6056be5b3102089aaaec517908947edab7af9d" title="Manually merge PR #1290 (fixes #9861)">0c6056be5b3102089aaaec517908947edab7af9d</a>.</p>